GNU bug report logs - #75861
31.0.50; calc units error

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Message #29 received at submit <at> debbugs.gnu.org (full text, mbox):

From: Michael Heerdegen <michael_heerdegen <at> web.de>
To: çağlar girit via "Bug reports for GNU Emacs, the Swiss
 army knife of text editors" <bug-gnu-emacs <at> gnu.org>
Cc: çağlar girit <cog <at> pelagi.cc>, schwab <at> suse.de,
 Eli Zaretskii <eliz <at> gnu.org>, 75861 <at> debbugs.gnu.org
Subject: Re: bug#75861: 31.0.50; calc units error
Date: Fri, 31 Jan 2025 02:34:35 +0100

çağlar girit via "Bug reports for GNU Emacs, the Swiss army knife of
text editors" <bug-gnu-emacs <at> gnu.org> writes:

> So perhaps there is a bug somewhere in the Mathematica language
> implementation, starting at calc-lang.el line 1816, but difficult for
> me to find.

AFAIU, this is a more general design problem.  Switching the language
makes all input (in a broader sense) being interpreted as expression in
that language.  Like, interpreting the built-in unit definitions.

If you reverse your recipe so that Calc builds the unit table before you
switch to Mathematica language mode, the issue doesn't appear.


Michael.

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